docs: add Marimo to nest-asyncio environments

[VildMedPap]

Hi,

While testing pydantic-ai in the Marimo reactive notebook framework (Github | Website), I ran into the RuntimeError: This event loop is already running error:

I resolved it by using nest_asyncio.apply():

I thought it might be helpful to add Marimo to the troubleshoot as a known environment where this solution works.

[hyperlint-ai]

PR Change Summary

Added Marimo to the troubleshooting documentation as a known environment for resolving the 'RuntimeError: This event loop is already running' issue using nest_asyncio.

• Updated troubleshooting notes to include Marimo as a supported environment for nest_asyncio.
• Provided a link to the Marimo GitHub repository in the documentation.

Modified Files

• docs/troubleshooting.md

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[Kludex]

Thanks. :)